A surprising number of good comedic actors star in this big budget squeakeuel. Alvin and the gang send Dave (Jason Lee) to the hospital with what I assume is an irreversible spinal injury, so they go off to high school to complete in some charity concert. Meanwhile their conniving former manager Ian (David Cross) uses his new act the Chipettes, a demographically equal female version of the Chipmunks, to sabotage the brothers by singing "Single Ladies" twelve times in a row. Also there's a football game and I think they pilot an RC helicopter.